Lock box



FIG. 1 is a front view thereof of a lock box showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is perspective view.

The short dash broken lines indicate portions of the lock box that form no part of the claimed design. 

CLAIM The ornamental design for a lock box, as shown and described. 